摘要:
A method of storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. A polymerized polymeric material is provided within the vessel. The fluid is contacted with the polymerized polymeric material for take-up of the fluid by the polymerized polymeric material. The fluid is released from the polymerized polymeric material and dispensed from the vessel.
摘要:
The present invention concerns a process for capturing organosiliceous complexes in the gaseous or liquid phase on a solid containing at least 80% by weight of alumina after calcining at 1000° C. The alumina has a total pore volume of more than 30 ml/100 g, a fraction of the pore volume in pores with a diameter of 70 Å or more of more than 10 ml/100 g and a specific surface area of more than 10 m2/g.
摘要:
A filter system including a method for self cleaning the filter system of an electronic equipment enclosure where air flow is monitored either by monitoring fan performance of air flow velocity through the enclosure. The system includes two filters elements, an upstream ASHRAE or HEPA filter element to block particulate matter and a downstream PTFE filter element to block water vapor. The ASHRAE or HEPA filter element is relatively inexpensive and easy to clean. The PTFE filter element is more expensive and difficult to clean. Thus, the cheaper filter is used to protect the more expensive filter from contaminants and to increase its useful life. The method of self cleaning includes stopping the fan when a signal is received indicating a predetermined resistance to air flow which is a function of blockage of the filter elements, thereafter operating the fan at an increased rotational velocity to determine whether the fan itself is malfunctioning, thereafter slowing and stopping the fan to allow the fan to be reversed, rotating the fan in reverse for a predetermined period of time, such as five minutes, thereafter slowing and stopping the fan and returning the fan to its usual rotational velocity and direction. If the resistance to air flow is still above a predetermined level, the fan is again slowed, stopped and reversed and then returned to normal operation. The reversal operation can be conducted a multiple number of times, however, after a predetermined number, a signal is sent requesting maintenance
摘要:
Adsorbents and methods of use thereof are provided. One representative, among others, includes an adsorbent having an alkali metal promoted, mixed trivalent layered double hydroxide (LDH) composition. When the mixed trivalent layered double hydroxide (LDH) composition is heated to a temperature ranging from about 300° C. to 450° C., an the adsorbent having an adsorption capacity of at least 0.8 millimoles of CO2 adsorbed per gram of adsorbent is formed.
摘要:
A method of desorbing a volatile component from a spent adsorbent is disclosed, which includes flowing a stream of supercritical carbon dioxide through a rotating packed bed of the spent adsorbent; and collecting an effluent from the rotating packed bed, which contains supercritical carbon dioxide and the volatile component entrained therein. In one embodiment of the present invention a spent activated carbon from a process for recovering 2,2,3,3-tetrafluro-1-propanol from a gas stream containing 2,2,3,3-tetrafluro-1-propanol is regenerated by flowing a stream of supercritical carbon dioxide through a rotating packed bed of the spent activated carbon.
摘要:
Toxic substances such as heavy metals are extracted from a medium using a sorbent composition. The composition is derived by sulfidation of red mud, which contains hydrated ferric oxides derived from the Bayer processing of bauxitic ores. Exemplary sulfidizing compounds are H2S, Na2S, K2S, (NH4)2S, and CaSx. The sulfur content typically is from about 0.2 to about 10% above the residual sulfur in the red mud. The sulfidized red mud is effective for sorbing some contaminants, such as mercury, which are not effectively sorbed by red mud. Conversely, red mud is effective for sorbing other contaminants, such as arsenic, which are not effectively sorbed by sulfidized red mud. Thus, some aspects of the invention utilize combinations of red mud and sulfidized red mud, which potentially can allow for the extraction of a wider range of contaminants.
摘要翻译:使用吸附剂组合物从介质中提取有毒物质如重金属。 该组合物是通过红泥硫化产生的,其中含有源于拜耳铝土矿矿石的水合氧化铁。 示例性的硫化化合物是H 2 S 2,N 2 S,K 2 S,(NH 4) > 2 S>和CaS x x。 硫含量通常比红泥中的残留硫高约0.2至约10%。 硫化红泥对于吸收一些不被红泥吸收的污染物如汞是有效的。 相反,红泥对于吸附其他不被硫化红泥吸收的其他污染物如砷是有效的。 因此,本发明的一些方面利用红泥和硫化红泥的组合,其可能允许提取更宽范围的污染物。
摘要:
Methods and apparatus for purifying gases having organic impurities, including the use of granulated porous glass. The method of the invention includes the following steps. An impure gas comprising a first gas and an organic compound is provided. A packed bed of granulated porous glass is provided. The impure gas is allowed to flow into the packed bed, thereby preferentially adsorbing at least some of the organic compound on the granulated porous glass to yield a purified gas having a concentration of the organic compound that is lower than that of the impure gas. The purified gas is allowed to flow out of the packed bed.
摘要:
Process for purifying or separating a gas or gas mixture using a monolithic adsorbent for the separation or purification of gases or gas mixtures, having a cellular structure with open porosity in the form of a solid foam permeable to the gas molecules. The gas phase of the adsorbent possesses an essentially convex structure and the solid phase an essentially concave structure. The solid foam has a density of greater than or equal to 500 kg/m3 and an open porosity of between 20 and 60%. The gas is air or an H2/CO mixture. The process is of the VSA, PSA or TSA type. This process can be used in particular in OBOGS-type systems to supply passengers of the vehicle or a device participating in the traction of the vehicle and/or in its electrical supply, in particular a fuel cell. This process can also be used in medical oxygen concentrators.
摘要翻译:使用用于分离或纯化气体或气体混合物的整体式吸附剂来纯化或分离气体或气体混合物的方法,其具有以气体分子可渗透的固体泡沫形式的开放孔隙度的多孔结构。 吸附剂的气相具有基本上凸的结构,固相基本上是凹的结构。 固体泡沫具有大于或等于500kg / m 3的密度和20-60%的开孔率。 气体是空气或H 2 CO 2混合物。 该过程是VSA,PSA或TSA型。 该过程可以特别用于OBOGS型系统中,以供应车辆的乘客或参与车辆牵引和/或其电源,特别是燃料电池的设备。 该过程也可用于医用氧气浓缩器。
摘要:
Adsorbents and methods of use thereof are provided. One representative, among others, includes an adsorbent having an alkali metal promoted, mixed trivalent layered double hydroxide (LDH) composition. When the mixed trivalent layered double hydroxide (LDH) composition is heated to a temperature ranging from about 300° C. to 450° C., an the adsorbent having an adsorption capacity of at least 0.8 millimoles of CO2 adsorbed per gram of adsorbent is formed.
摘要:
The gas storage method comprises a step of keeping a gas to be stored and an adsorbent in a vessel at a low temperature below the liquefaction temperature of the gas to be stored so that the gas to be stored is adsorbed onto the adsorbent in a liquefied state, a step of introducing into the vessel kept at the low temperature a gaseous or liquid medium with a freezing temperature that is higher than the above-mentioned liquefaction temperature of the gas to be stored, for freezing of the medium, so that the gas to be stored which has been adsorbed onto the adsorbent in a liquefied state is encapsulated by the medium which has been frozen, and a step of keeping the vessel at a temperature higher than the liquefaction temperature and below the freezing temperature.